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geni-se.h
/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */ #ifndef _LINUX_QCOM_GENI_SE #define _LINUX_QCOM_GENI_SE #include <linux/interconnect.h> /** * enum geni_se_xfer_mode: Transfer modes supported by Serial Engines * * @GENI_SE_INVALID: Invalid mode * @GENI_SE_FIFO: FIFO mode. Data is transferred with SE FIFO * by programmed IO method * @GENI_SE_DMA: Serial Engine DMA mode. Data is transferred * with SE by DMAengine internal to SE * @GENI_GPI_DMA: GPI DMA mode. Data is transferred using a DMAengine * configured by a firmware residing on a GSI engine. This DMA name is * interchangeably used as GSI or GPI which seem to imply the same DMAengine */ enum geni_se_xfer_mode { GENI_SE_INVALID, GENI_SE_FIFO, GENI_SE_DMA, GENI_GPI_DMA, }; /* Protocols supported by GENI Serial Engines */ enum geni_se_protocol_type { GENI_SE_NONE, GENI_SE_SPI, GENI_SE_UART, GENI_SE_I2C, GENI_SE_I3C, GENI_SE_SPI_SLAVE, }; struct geni_wrapper; struct clk; enum geni_icc_path_index { GENI_TO_CORE, CPU_TO_GENI, GENI_TO_DDR }; struct geni_icc_path { struct icc_path *path; unsigned int avg_bw; }; /** * struct geni_se - GENI Serial Engine * @base: Base Address of the Serial Engine's register block * @dev: Pointer to the Serial Engine device * @wrapper: Pointer to the parent QUP Wrapper core * @clk: Handle to the core serial engine clock * @num_clk_levels: Number of valid clock levels in clk_perf_tbl * @clk_perf_tbl: Table of clock frequency input to serial engine clock * @icc_paths: Array of ICC paths for SE */ struct geni_se { void __iomem *base; struct device *dev; struct geni_wrapper *wrapper; struct clk *clk; unsigned int num_clk_levels; unsigned long *clk_perf_tbl; struct geni_icc_path icc_paths[3]; }; /* Common SE registers */ #define GENI_FORCE_DEFAULT_REG 0x20 #define GENI_OUTPUT_CTRL 0x24 #define SE_GENI_STATUS 0x40 #define GENI_SER_M_CLK_CFG 0x48 #define GENI_SER_S_CLK_CFG 0x4c #define GENI_IF_DISABLE_RO 0x64 #define GENI_FW_REVISION_RO 0x68 #define SE_GENI_CLK_SEL 0x7c #define SE_GENI_CFG_SEQ_START 0x84 #define SE_GENI_DMA_MODE_EN 0x258 #define SE_GENI_M_CMD0 0x600 #define SE_GENI_M_CMD_CTRL_REG 0x604 #define SE_GENI_M_IRQ_STATUS 0x610 #define SE_GENI_M_IRQ_EN 0x614 #define SE_GENI_M_IRQ_CLEAR 0x618 #define SE_GENI_M_IRQ_EN_SET 0x61c #define SE_GENI_M_IRQ_EN_CLEAR 0x620 #define SE_GENI_S_CMD0 0x630 #define SE_GENI_S_CMD_CTRL_REG 0x634 #define SE_GENI_S_IRQ_STATUS 0x640 #define SE_GENI_S_IRQ_EN 0x644 #define SE_GENI_S_IRQ_CLEAR 0x648 #define SE_GENI_S_IRQ_EN_SET 0x64c #define SE_GENI_S_IRQ_EN_CLEAR 0x650 #define SE_GENI_TX_FIFOn 0x700 #define SE_GENI_RX_FIFOn 0x780 #define SE_GENI_TX_FIFO_STATUS 0x800 #define SE_GENI_RX_FIFO_STATUS 0x804 #define SE_GENI_TX_WATERMARK_REG 0x80c #define SE_GENI_RX_WATERMARK_REG 0x810 #define SE_GENI_RX_RFR_WATERMARK_REG 0x814 #define SE_GENI_IOS 0x908 #define SE_GENI_M_GP_LENGTH 0x910 #define SE_GENI_S_GP_LENGTH 0x914 #define SE_DMA_TX_IRQ_STAT 0xc40 #define SE_DMA_TX_IRQ_CLR 0xc44 #define SE_DMA_TX_FSM_RST 0xc58 #define SE_DMA_RX_IRQ_STAT 0xd40 #define SE_DMA_RX_IRQ_CLR 0xd44 #define SE_DMA_RX_LEN_IN 0xd54 #define SE_DMA_RX_FSM_RST 0xd58 #define SE_HW_PARAM_0 0xe24 #define SE_HW_PARAM_1 0xe28 /* GENI_FORCE_DEFAULT_REG fields */ #define FORCE_DEFAULT BIT(0) /* GENI_OUTPUT_CTRL fields */ #define GENI_IO_MUX_0_EN BIT(0) /* GENI_STATUS fields */ #define M_GENI_CMD_ACTIVE BIT(0) #define S_GENI_CMD_ACTIVE BIT(12) /* GENI_SER_M_CLK_CFG/GENI_SER_S_CLK_CFG */ #define SER_CLK_EN BIT(0) #define CLK_DIV_MSK GENMASK(15, 4) #define CLK_DIV_SHFT 4 /* GENI_IF_DISABLE_RO fields */ #define FIFO_IF_DISABLE (BIT(0)) /* GENI_FW_REVISION_RO fields */ #define FW_REV_PROTOCOL_MSK GENMASK(15, 8) #define FW_REV_PROTOCOL_SHFT 8 /* GENI_CLK_SEL fields */ #define CLK_SEL_MSK GENMASK(2, 0) /* SE_GENI_CFG_SEQ_START fields */ #define START_TRIGGER BIT(0) /* SE_GENI_DMA_MODE_EN */ #define GENI_DMA_MODE_EN BIT(0) /* GENI_M_CMD0 fields */ #define M_OPCODE_MSK GENMASK(31, 27) #define M_OPCODE_SHFT 27 #define M_PARAMS_MSK GENMASK(26, 0) /* GENI_M_CMD_CTRL_REG */ #define M_GENI_CMD_CANCEL BIT(2) #define M_GENI_CMD_ABORT BIT(1) #define M_GENI_DISABLE BIT(0) /* GENI_S_CMD0 fields */ #define S_OPCODE_MSK GENMASK(31, 27) #define S_OPCODE_SHFT 27 #define S_PARAMS_MSK GENMASK(26, 0) /* GENI_S_CMD_CTRL_REG */ #define S_GENI_CMD_CANCEL BIT(2) #define S_GENI_CMD_ABORT BIT(1) #define S_GENI_DISABLE BIT(0) /* GENI_M_IRQ_EN fields */ #define M_CMD_DONE_EN BIT(0) #define M_CMD_OVERRUN_EN BIT(1) #define M_ILLEGAL_CMD_EN BIT(2) #define M_CMD_FAILURE_EN BIT(3) #define M_CMD_CANCEL_EN BIT(4) #define M_CMD_ABORT_EN BIT(5) #define M_TIMESTAMP_EN BIT(6) #define M_RX_IRQ_EN BIT(7) #define M_GP_SYNC_IRQ_0_EN BIT(8) #define M_GP_IRQ_0_EN BIT(9) #define M_GP_IRQ_1_EN BIT(10) #define M_GP_IRQ_2_EN BIT(11) #define M_GP_IRQ_3_EN BIT(12) #define M_GP_IRQ_4_EN BIT(13) #define M_GP_IRQ_5_EN BIT(14) #define M_IO_DATA_DEASSERT_EN BIT(22) #define M_IO_DATA_ASSERT_EN BIT(23) #define M_RX_FIFO_RD_ERR_EN BIT(24) #define M_RX_FIFO_WR_ERR_EN BIT(25) #define M_RX_FIFO_WATERMARK_EN BIT(26) #define M_RX_FIFO_LAST_EN BIT(27) #define M_TX_FIFO_RD_ERR_EN BIT(28) #define M_TX_FIFO_WR_ERR_EN BIT(29) #define M_TX_FIFO_WATERMARK_EN BIT(30) #define M_SEC_IRQ_EN BIT(31) #define M_COMMON_GENI_M_IRQ_EN (GENMASK(6, 1) | \ M_IO_DATA_DEASSERT_EN | \ M_IO_DATA_ASSERT_EN | M_RX_FIFO_RD_ERR_EN | \ M_RX_FIFO_WR_ERR_EN | M_TX_FIFO_RD_ERR_EN | \ M_TX_FIFO_WR_ERR_EN) /* GENI_S_IRQ_EN fields */ #define S_CMD_DONE_EN BIT(0) #define S_CMD_OVERRUN_EN BIT(1) #define S_ILLEGAL_CMD_EN BIT(2) #define S_CMD_FAILURE_EN BIT(3) #define S_CMD_CANCEL_EN BIT(4) #define S_CMD_ABORT_EN BIT(5) #define S_GP_SYNC_IRQ_0_EN BIT(8) #define S_GP_IRQ_0_EN BIT(9) #define S_GP_IRQ_1_EN BIT(10) #define S_GP_IRQ_2_EN BIT(11) #define S_GP_IRQ_3_EN BIT(12) #define S_GP_IRQ_4_EN BIT(13) #define S_GP_IRQ_5_EN BIT(14) #define S_IO_DATA_DEASSERT_EN BIT(22) #define S_IO_DATA_ASSERT_EN BIT(23) #define S_RX_FIFO_RD_ERR_EN BIT(24) #define S_RX_FIFO_WR_ERR_EN BIT(25) #define S_RX_FIFO_WATERMARK_EN BIT(26) #define S_RX_FIFO_LAST_EN BIT(27) #define S_COMMON_GENI_S_IRQ_EN (GENMASK(5, 1) | GENMASK(13, 9) | \ S_RX_FIFO_RD_ERR_EN | S_RX_FIFO_WR_ERR_EN) /* GENI_/TX/RX/RX_RFR/_WATERMARK_REG fields */ #define WATERMARK_MSK GENMASK(5, 0) /* GENI_TX_FIFO_STATUS fields */ #define TX_FIFO_WC GENMASK(27, 0) /* GENI_RX_FIFO_STATUS fields */ #define RX_LAST BIT(31) #define RX_LAST_BYTE_VALID_MSK GENMASK(30, 28) #define RX_LAST_BYTE_VALID_SHFT 28 #define RX_FIFO_WC_MSK GENMASK(24, 0) /* SE_GENI_IOS fields */ #define IO2_DATA_IN BIT(1) #define RX_DATA_IN BIT(0) /* SE_GENI_M_GP_LENGTH and SE_GENI_S_GP_LENGTH fields */ #define GP_LENGTH GENMASK(31, 0) /* SE_DMA_TX_IRQ_STAT Register fields */ #define TX_DMA_DONE BIT(0) #define TX_EOT BIT(1) #define TX_SBE BIT(2) #define TX_RESET_DONE BIT(3) /* SE_DMA_RX_IRQ_STAT Register fields */ #define RX_DMA_DONE BIT(0) #define RX_EOT BIT(1) #define RX_SBE BIT(2) #define RX_RESET_DONE BIT(3) #define RX_FLUSH_DONE BIT(4) #define RX_DMA_PARITY_ERR BIT(5) #define RX_DMA_BREAK GENMASK(8, 7) #define RX_GENI_GP_IRQ GENMASK(10, 5) #define RX_GENI_CANCEL_IRQ BIT(11) #define RX_GENI_GP_IRQ_EXT GENMASK(13, 12) /* SE_HW_PARAM_0 fields */ #define TX_FIFO_WIDTH_MSK GENMASK(29, 24) #define TX_FIFO_WIDTH_SHFT 24 /* * For QUP HW Version >= 3.10 Tx fifo depth support is increased * to 256bytes and corresponding bits are 16 to 23 */ #define TX_FIFO_DEPTH_MSK_256_BYTES GENMASK(23, 16) #define TX_FIFO_DEPTH_MSK GENMASK(21, 16) #define TX_FIFO_DEPTH_SHFT 16 /* SE_HW_PARAM_1 fields */ #define RX_FIFO_WIDTH_MSK GENMASK(29, 24) #define RX_FIFO_WIDTH_SHFT 24 /* * For QUP HW Version >= 3.10 Rx fifo depth support is increased * to 256bytes and corresponding bits are 16 to 23 */ #define RX_FIFO_DEPTH_MSK_256_BYTES GENMASK(23, 16) #define RX_FIFO_DEPTH_MSK GENMASK(21, 16) #define RX_FIFO_DEPTH_SHFT 16 #define HW_VER_MAJOR_MASK GENMASK(31, 28) #define HW_VER_MAJOR_SHFT 28 #define HW_VER_MINOR_MASK GENMASK(27, 16) #define HW_VER_MINOR_SHFT 16 #define HW_VER_STEP_MASK GENMASK(15, 0) #define GENI_SE_VERSION_MAJOR(ver) ((ver & HW_VER_MAJOR_MASK) >> HW_VER_MAJOR_SHFT) #define GENI_SE_VERSION_MINOR(ver) ((ver & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT) #define GENI_SE_VERSION_STEP(ver) (ver & HW_VER_STEP_MASK) /* QUP SE VERSION value for major number 2 and minor number 5 */ #define QUP_SE_VERSION_2_5 0x20050000 /* * Define bandwidth thresholds that cause the underlying Core 2X interconnect * clock to run at the named frequency. These baseline values are recommended * by the hardware team, and are not dynamically scaled with GENI bandwidth * beyond basic on/off. */ #define CORE_2X_19_2_MHZ 960 #define CORE_2X_50_MHZ 2500 #define CORE_2X_100_MHZ 5000 #define CORE_2X_150_MHZ 7500 #define CORE_2X_200_MHZ 10000 #define CORE_2X_236_MHZ 16383 #define GENI_DEFAULT_BW Bps_to_icc(1000) #if IS_ENABLED(CONFIG_QCOM_GENI_SE) u32 geni_se_get_qup_hw_version(struct geni_se *se); /** * geni_se_read_proto() - Read the protocol configured for a serial engine * @se: Pointer to the concerned serial engine. * * Return: Protocol value as configured in the serial engine. */ static inline u32 geni_se_read_proto(struct geni_se *se) { u32 val; val = readl_relaxed(se->base + GENI_FW_REVISION_RO); return (val & FW_REV_PROTOCOL_MSK) >> FW_REV_PROTOCOL_SHFT; } /** * geni_se_setup_m_cmd() - Setup the primary sequencer * @se: Pointer to the concerned serial engine. * @cmd: Command/Operation to setup in the primary sequencer. * @params: Parameter for the sequencer command. * * This function is used to configure the primary sequencer with the * command and its associated parameters. */ static inline void geni_se_setup_m_cmd(struct geni_se *se, u32 cmd, u32 params) { u32 m_cmd; m_cmd = (cmd << M_OPCODE_SHFT) | (params & M_PARAMS_MSK); writel(m_cmd, se->base + SE_GENI_M_CMD0); } /** * geni_se_setup_s_cmd() - Setup the secondary sequencer * @se: Pointer to the concerned serial engine. * @cmd: Command/Operation to setup in the secondary sequencer. * @params: Parameter for the sequencer command. * * This function is used to configure the secondary sequencer with the * command and its associated parameters. */ static inline void geni_se_setup_s_cmd(struct geni_se *se, u32 cmd, u32 params) { u32 s_cmd; s_cmd = readl_relaxed(se->base + SE_GENI_S_CMD0); s_cmd &= ~(S_OPCODE_MSK | S_PARAMS_MSK); s_cmd |= (cmd << S_OPCODE_SHFT); s_cmd |= (params & S_PARAMS_MSK); writel(s_cmd, se->base + SE_GENI_S_CMD0); } /** * geni_se_cancel_m_cmd() - Cancel the command configured in the primary * sequencer * @se: Pointer to the concerned serial engine. * * This function is used to cancel the currently configured command in the * primary sequencer. */ static inline void geni_se_cancel_m_cmd(struct geni_se *se) { writel_relaxed(M_GENI_CMD_CANCEL, se->base + SE_GENI_M_CMD_CTRL_REG); } /** * geni_se_cancel_s_cmd() - Cancel the command configured in the secondary * sequencer * @se: Pointer to the concerned serial engine. * * This function is used to cancel the currently configured command in the * secondary sequencer. */ static inline void geni_se_cancel_s_cmd(struct geni_se *se) { writel_relaxed(S_GENI_CMD_CANCEL, se->base + SE_GENI_S_CMD_CTRL_REG); } /** * geni_se_abort_m_cmd() - Abort the command configured in the primary sequencer * @se: Pointer to the concerned serial engine. * * This function is used to force abort the currently configured command in the * primary sequencer. */ static inline void geni_se_abort_m_cmd(struct geni_se *se) { writel_relaxed(M_GENI_CMD_ABORT, se->base + SE_GENI_M_CMD_CTRL_REG); } /** * geni_se_abort_s_cmd() - Abort the command configured in the secondary * sequencer * @se: Pointer to the concerned serial engine. * * This function is used to force abort the currently configured command in the * secondary sequencer. */ static inline void geni_se_abort_s_cmd(struct geni_se *se) { writel_relaxed(S_GENI_CMD_ABORT, se->base + SE_GENI_S_CMD_CTRL_REG); } /** * geni_se_get_tx_fifo_depth() - Get the TX fifo depth of the serial engine * based on QUP HW version * @se: Pointer to the concerned serial engine. * * This function is used to get the depth i.e. number of elements in the * TX fifo of the serial engine. * * Return: TX fifo depth in units of FIFO words. */ static inline u32 geni_se_get_tx_fifo_depth(struct geni_se *se) { u32 val, hw_version, hw_major, hw_minor, tx_fifo_depth_mask; hw_version = geni_se_get_qup_hw_version(se); hw_major = GENI_SE_VERSION_MAJOR(hw_version); hw_minor = GENI_SE_VERSION_MINOR(hw_version); if ((hw_major == 3 && hw_minor >= 10) || hw_major > 3) tx_fifo_depth_mask = TX_FIFO_DEPTH_MSK_256_BYTES; else tx_fifo_depth_mask = TX_FIFO_DEPTH_MSK; val = readl_relaxed(se->base + SE_HW_PARAM_0); return (val & tx_fifo_depth_mask) >> TX_FIFO_DEPTH_SHFT; } /** * geni_se_get_tx_fifo_width() - Get the TX fifo width of the serial engine * @se: Pointer to the concerned serial engine. * * This function is used to get the width i.e. word size per element in the * TX fifo of the serial engine. * * Return: TX fifo width in bits */ static inline u32 geni_se_get_tx_fifo_width(struct geni_se *se) { u32 val; val = readl_relaxed(se->base + SE_HW_PARAM_0); return (val & TX_FIFO_WIDTH_MSK) >> TX_FIFO_WIDTH_SHFT; } /** * geni_se_get_rx_fifo_depth() - Get the RX fifo depth of the serial engine * based on QUP HW version * @se: Pointer to the concerned serial engine. * * This function is used to get the depth i.e. number of elements in the * RX fifo of the serial engine. * * Return: RX fifo depth in units of FIFO words */ static inline u32 geni_se_get_rx_fifo_depth(struct geni_se *se) { u32 val, hw_version, hw_major, hw_minor, rx_fifo_depth_mask; hw_version = geni_se_get_qup_hw_version(se); hw_major = GENI_SE_VERSION_MAJOR(hw_version); hw_minor = GENI_SE_VERSION_MINOR(hw_version); if ((hw_major == 3 && hw_minor >= 10) || hw_major > 3) rx_fifo_depth_mask = RX_FIFO_DEPTH_MSK_256_BYTES; else rx_fifo_depth_mask = RX_FIFO_DEPTH_MSK; val = readl_relaxed(se->base + SE_HW_PARAM_1); return (val & rx_fifo_depth_mask) >> RX_FIFO_DEPTH_SHFT; } void geni_se_init(struct geni_se *se, u32 rx_wm, u32 rx_rfr); void geni_se_select_mode(struct geni_se *se, enum geni_se_xfer_mode mode); void geni_se_config_packing(struct geni_se *se, int bpw, int pack_words, bool msb_to_lsb, bool tx_cfg, bool rx_cfg); int geni_se_resources_off(struct geni_se *se); int geni_se_resources_on(struct geni_se *se); int geni_se_clk_tbl_get(struct geni_se *se, unsigned long **tbl); int geni_se_clk_freq_match(struct geni_se *se, unsigned long req_freq, unsigned int *index, unsigned long *res_freq, bool exact); void geni_se_tx_init_dma(struct geni_se *se, dma_addr_t iova, size_t len); int geni_se_tx_dma_prep(struct geni_se *se, void *buf, size_t len, dma_addr_t *iova); void geni_se_rx_init_dma(struct geni_se *se, dma_addr_t iova, size_t len); int geni_se_rx_dma_prep(struct geni_se *se, void *buf, size_t len, dma_addr_t *iova); void geni_se_tx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); int geni_icc_get(struct geni_se *se, const char *icc_ddr); int geni_icc_set_bw(struct geni_se *se); void geni_icc_set_tag(struct geni_se *se, u32 tag); int geni_icc_enable(struct geni_se *se); int geni_icc_disable(struct geni_se *se); #endif #endif
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